Chuck



F. E. FISHER.

CHUCK.

APPLICATION FILED 1AN.26, 1921.

Patented Aug. 16', 1921.

a SHEETS-SHEET i.

ATTORNEK F. E. FISHER.

CHUCK. APPLICATION FILED 1AN.26. 1921.

Patented Aug. 16,

3 SHEETS-SHEET 2.

M W. M A M i W M r F Arm/Mam F- E. FISHER.

CHUCK.

APPLICATION FILED 1AN.26, 1921.. 1,387,844. Patented Aug. '16, 1921.

3 SHEETS-SHEET 3 III //1/VEW70/? UNITED STATES PATENT orrl-ce.

FREDERIQK ELLIOTT IFISZEIIER, OF 'S'UDIBROOK PARK, MARYLAND, ASS IG-NOR TO EUGENE K. PLUMLY, OF PHILADELPHIA, PENNSYLVANIA.

CHUCK.

Specification of Letters .Patent.

Patented Aug. 16', 1921.

Application filed January 26, 1921. Serial No. 439,932.

To all whom it may concern:

Be it known that I, FREDERICK ELLIOTT FISHER, a citizen of the United States, residing at Sudbrook Park, county of Baltimore, and State of Maryland, have invented a new and useful Improvement in Chucks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to an improvement in chucks and more particularly to chucks for machines for making cylindrical 01' round boxes, such as are commonly lmown as pill boxes.

The object of my invention is to provide a chuck of this character together with operating mechanism therefor, which is cheap of construction and assembly, and which is provided with adjusting devices to compensate for slight inaccuracies in construction.

In machines of the class in which these chucks are used the blanks from which the boxes are formed, which blanks consist of circular disks and rings which form the bottoms and the sides of the boxes, are fed successively to a rotary table under the chuck but in axial alinement therewith. The chuck which is continuously rotated is then lowcred and expanded to engage the disk and hold it in contact with the table and also chuck, a gummed strip is placed thereon to secure the disk to the ring, and the chuck is then raised to release the partially formed box and which is removed by a blast of air preparatory to feeding thenext set of blanks under the chuck.

The precise nature of my invention will be best understood by reference to the accompanying drawings, which will now be described, it being premised, however, that various changes may be made without departing from the spirit and scope of my invention as definedin the appended claims.

Figure 1 is a diagram illustrating the blank feeding and box forming elements.

F igs. '2 and 3 are detail sectional views of the devices for pressing the gummed strip into contact with the blanks. v

4 s a ca ect onal v ew oug the chuck audits operating mechanism.

Fig. 5 is a chuck jaws.

Fig. 6 is a detail sectional view on the line 33 of Fig. 4.

Fig. 7 is a similar view on the line 77 of Fig. 4.

Fig. 8 is another similar view the line 8-8 of Fig. 4.

Fig. 9 is an enlarged side view of the chuck body with the jaws removed.

In the manufacture of cylindrical boxes on machines of the above type, the bottom forming blanks or disks A are stacked with in a suitable cylindrical container at the side of a table B rotatably mounted below the chuck hereinafter described, and which disks are successively fed from the bottom of the stack to the table B, by means of a reciprocal feeding slide C, see Fig. 1. The sides of the boxes are formed of short cylinders or rings D which are placed on a continuously enlarged on rotating table E between fixed curved guides E or E and are carried against a stop ev by the moving table between a gate F hinged at 7, and in front of a reciprocal feeding slide G. is a gummed strip feeding roller which draws a gummed strip h from a suitable source of supply, and which roller is slightly more than four times the diameter of the box being made. This roller H is also provided with four cutters (not shown) spaced ninety degrees from each other to cut the continuous strip it into proper lengths to cover the boxes. J is a strip turning and pressing roller which is moved into contact with the positioned blanks A and D on the table B, and the ap plied strip 72., after theblanks are grasped by the jaws K of the chuck to press the strip into contact with the blanks to secure the turning tool L is adjustably carried by a bar.

L which is in turn carried by .a rod L which is actuated by the mechanism for actuating the chuck. M is a stop pin for the turning toolto prevent its downward movementbeyond a predetermined limit when the chuck is moved downward and which pin is removed as hereinafter described to permit the tool to descend to turn the edge h of the strip.

All of the above actuating elements are connected to operating mechanism and arranged to actuate said elements in timed re lation to each other to form the body or cover of a box, which are counter parts of: each other.

In the operation of the machine, the slide C is first actuated to feed a bottom blank A from under the stack of blanks to the table B. The slide G is then actuated to place a blank D on top of the positioned blank A. Immediately after the blanks are positioned, the chuck is lowered, together with the turn ing tool L. The chuck is lowered a sufficient distance to clamp the blank A between the ends of the jaws K and the table B. after which the jaws are spread to clamp the blank D, and to rotate the parts about the axis oi the chuck.

The downward movement and rotation of the chuck as well as the spreading of the jaws is eiiected by mechanism hereinafter described, and which downward movement of the chuck also causes the downward movement of the turning tool L until it engages the stop M, through the medium of a spring, which spring completes the further downward movement of the tool L when the pin M is withdrawn. After the blanks A and D are grasped and rotated by the chuck jaws,

the roller H is moved into engagment with the blanks and is rotated one-fourth turn in timed relation to the blanks to feed a section of the strip h to the blanks which is of sufficient length to cover the box, and the roller J is also moved into contact with the placed strip to press it into engagement with the blank A, the side of blank D and turn the edge 71, at right angles to the body of the strip as shown in Fig. 2. The pin M is then withdrawn laterally from the full line position to the dotted line position shown in Fig. l to permit the turning in tool L to be moved to the position shown to turn the edge 01"? the gummed strip against the inside of blank D. After the various elements have performed their functions, they are returned to the positions shown in Fig. 1 and during the return of the chuck the jaws arevfirst closed and then withdrawn to release the finished boX, which is removed from the table B by a blast of air which is delivered after the operations on the box are completed.

Mounted on the frame of the machine which supports the driving mechanism for the above actuating members are standards 10, and 11 is a split bearing thereon. Rotatably mounted in three bearing liners 12 in said bearing is a sleeve 13 to the lower end of which is connected the body, 14 of the chuck. The body of the chuck is provided with an upwardly extending boss 15 which is bored for the reception of the end oi the sleeve 13. The chuck body is secured to the end of the sleeve by means of a flanged nut 16 which has threaded engagement with the boss 15 and an annular flange on the sleeve 13, to rigidly secure the chuck to the sleeve. The chuck body 14 is provided with a downwardly extending stem 17, and 18 are radial slots or recesses in the boc y 1 1 and stem 17. These slots 18 do not extend through the stem, as clearly shown in Figs. 6 and 9, so there is a web of metal 19 which connects the legs of the stem between the slots. Each of the tour jaws K of the chuck is formed integrally with the lower end of an L-shaped lever 20 having a tooth 21 for actuating the jaws, and which levers are seated within the slots 18 which form guides therefor, and are pivotally connected to the body by means of pins 22. 23 is the actuating spindle for the chuck jaws which is slidably mounted in the sleeve 13, but is rotated therewith as hereina'i'ter described, and is provided at its lower end with an annular recess forthe reception of the teeth 21 on the levers 20. hflounted on the sleeve 13 is a beveled gear 2 1 which is connected to the sleeve 13 and the spindle 2-3 by means of keys 25, which pass through slots in the hub of the gear 24 and sleeve 13. The inner ends of these keys engage key seats in the spindle 23 and are retained in position by a sleeve 26 surrounding the hub of the gear 2%. The gear 2% is in driving relation with a bevel gear 27 on a shaft 28, which is continuously driven by the driving mechanism of the machine, the connections of the parts being such that the spindle 23 and sleeve 1.3 together with the chuck are continuously rotated, while the sleeve and spindle are tree to be moved longitudinally relative to each other and the gear wheel 24:.

lnterposed between the gear wheel 2 land the liner 12 is the upper hearing, and surrounding the sleeve 13, is a sleeve 29 which is arranged to retain the gear wheel 22L on its seat on the central bearing and prevent upward movement of the gear 24; by triction when the sleeve 13 is raised. Formed integrally with the liner 12 in the upper bearing is a cap having a threaded engagement with the shell 31, and 82 are balls between bearing disks between the cap and the shell.

33 is. an adjustable stop nut threaded on the upper end of the sleeve 13 and which is arranged to limit the downward movement of the sleeve 13 and the chuck, and 341 is alock nut for the nut Connected to the upper end of the spindle 23 by means of a pin 35 is a sleeve 36, which pin extends through holes in the sleeve and a slot in the spindle so that the sleeve is fixed against rotation with relation to the spindle, but is-adapted to be adjusted longitudinally therewith to determine the relative longitudinal movement between the sleeve 13 and the spindle 23, and consequently the spreading of the jaws K of the chuck.

This adjustment is eflected by means of a V shouldered screw 37 which has a threaded engagement with the spindle 23, while the shoulder of the screw is clamped against the top of the sleeve 36 by means of a locking nut 38 having 'a threaded engagement with the sleeve 36. lVhen it is desired to adjust,

the spindle 23 with relation to the sleeve 36, the nut 38 is loosened to free the screw 37 and the'screw is then rotated to make the adjustment, after which the nut is tightened to lock the screw.

Surrounding the sleeve 36 is a shell 39 which incloses ball bearings on opposite sides of an annular flange 40 on the sleeve 36, the lower set being seated on a flange in the shell, while the upper set is retained in position by a cap 41 threaded on the shell 39. Interposed between flanged collars 42 and 43 surrounding the spindle 23 and within the shell 39 is a spring-44 which maintains the upper collar 42'against the lower end of sleeve 36 and collar 43 against the upper end of sleeve 13.

Pivotally connected between standards 10 on a spindle 45 is -a lever 46 having a fork at one end pivotally connected to the shell 39 by means of screw pins 47. The other end of this lever is also members 48 which extend at right angles to the fork connected to the shell 39 and straddlea lever 49 which is also pivoted to the shaft 45 between the standards 10. The forkmembers 48 are provided with screws 50 for varying the angle between the levers 46 and 49, the latter of which is provided with a roller 51 which is engaged by a cam 52 to lower the shell 39, and 54 is a spring interposed between the lever 46 and a projection on one of the standards 10 to retain the shell 39 and chuck in their elevated positions.

Connected to the cylindrical portion of the shell 39 belowits connection with lever 46 by means of a set screw 55 is a collar 56 to which isconnected a rod 57, which is adapted to slide in guides on the front of the split bearing 11. s

Slidably mounted on screws 58 connected 'to the rod 57 is the rod L and which is held downwardly by a spring 59 interposed between the upper end thereof and a projection on the rod 57 V In the operation of the machine the gear wheels 24 and 27 are continuously driven to rotate the chuck and its operating devices, while the shaft 53 is rotated in timed relation to the blank feeding devices, gummed strip feeding roller H and the strip shaping roller J. 7

provided with fork tween the chuck spindle and the The cam 52 is rotated in the direction of the arrow indicated in Fig. 4 and during its first movement from the position shown the various parts will be moved downward until the nut 33 engages the disk above the balls 32 which will limit the downward movement of the chuck, and at which time the jaws K will be within the blank D and suiiiciently low enough to frictionally clamp the blank A between the ends ofthe jaws and the table B, but not with sul'licient pressure to mar the blank A. During the first downward movement of the chuck parts the turning in tool supporting member L will engage the top of the stop pin M and arrest its downward movement, and the further downward movement of the shell 39 will compress the spring 59, which is arranged to move the turning tool L into operative position when the pin Mis withdrawn as previously de scribed. In this further movement of the shell 39 by the cam 52 the roller 51 will be further elevated until it passes onto the concentric portion 52 thereof, and during such further movement after the downward movement of the chuck has the spindle 23 will be moved against the action of the spring 44 until the high point of the cam 52 engages the roller 51. This relative movement of the spindle 23 and sleeve 13 will rock the jaw levers 20 about their pivot pins and spread the jaws to grasp the blank D. The box is finished as previously described during the time that the concentric portion 52 is in engagement withthe roller 51, and after the roller passes from said cam portion the parts will be returned to the positions shown, in Fig. 4'by the springs 44, 54 and 59.

The advantages of my invention result from the provision of a chuck and operatingdevices which are arranged to be adjusted to cause the chuck to be moved to a predetermined position. together with adjusting means for determining the relative movement between the chuck moving means and the chuck jaw actuating means so that the pressure on the several box formin blanks can readily be controlled.

A further advantage results from the provision of means for connecting'the turning tool to the chuck actuating shell which will avoid the necessity of perfect alinement be- 9 guides for the turning tool holding bar or rod;v

A still further advantage results from the provision of a double armed lever for actuating the chuck whichis provided with means for adjusting the angle of one arm with relation to the other.

Further, from the provision of a chuck having jaws which are connected to a spindle which is arranged to be moved longitudinally with relation to the: chuck been arrested,

body, and which is so connected to the chuck jaws that the jaws will be opened and closed by the movement of the spindle.

Another advantage results-from the provision of a chuck body having a stem with recesses for the jaw levers, in which the stem is provided with a web of metal connecting the guides for the jaw levers to form rigid supports for the jaws near their box engag ing portions to maintain them in their radial positions with relation to the chuck body.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is i 1. A chuck having a body portion, a movable sleeve to which the body is connect ed, a plurality of jaws mounted in the body, a longitudinally movable spindle centrally mounted in the sleeve and body, actuating devices for the sleeve and spindle, actuating connections between the spindle and jaws, and actuating connections between the sleeve and spindle.

2. A movable chuck having a body portion, a reciprocating sleeve to which the body is connected, a support for the sleeve, a plurality of L-shaped jaw levers pivotally connected at one end to said body, engaging portions on the other ends of said levers, a longitudinally movable spindle centrally mounted in the sleeve and body, means to reciprocate the sleeve and spindle, connections between the levers and spindle for actuating the levers to open and close the jaws, and actuating connections between the sleeve and spindle.

3. A movable chuck having a body portion, a reciprocating sleeve to which the body is connected, a support for the sleeve, a plurality of L-shaped jaw levers pivotally connected at one end to said body, engaging portions on the other ends oi said levers, a longitudinally movable spindle centrally mounted in the body, means to reciprocate the sleeve and spindle, an annular recess in the spindle, a tooth on each lever seated in said recess, and actuating connections .be tween the sleeve and spindle.

i. A paper box machine having sleeve mounted for rotation and reciprocation, a chuck body connected to said sleeve, jaws mounted in the chuck body, a spindle mounted in the sleeve and arranged to move longi tudinally with relation thereto, actuating connections between the spindle and the jaws, means for rotating the sleeve, and a single means for reciprocating the spindle and sleeve as well as the spindle with relation to the sleeve to actuate the j aws.

5. A paper box machine having a sleeve mounted for rotation and reciprocation, a chuck body connected to said sleeve, jaws pivotally mounted in the chuck body, a spindle mounted in the sleeve and arranged to move longitudinally with relation thereto, actuating connections between the spindle and the jaws, means for rotating the spindle and sleeve, and a single means for reciprocating the spindle and sleeve as well as the spindle with relation to the sleeve to actuate the jaws.

6. A paper box machine having a sleeve mounted for rotation and reciprocation, a chuck body connected to said sleeve, jaws mounted in the chuck body, a spindle mounted in the sleeve and arranged to move longitudinally with relation thereto, actuating connections between the spindle and the jaws, means for rotating the sleeve, means for reciprocating the sleeve as well. as the spindle with relation to the sleeve, and adjustable stop means for the sleeve for limiting the movement of the sleeve and permit the spindle to move relative thereto to actuate the jaws.

7. fl. paper box machine having a sleeve mounted for rotation and reciprocation, a chuck body connected to said sleeve, jaws mounted in the chuck body, a spindle mounted in the sleeve and arranged to move longitudinally with relation thereto, actuating connections between the spindle and the jaws, means "for rotating the sleeve, means for reciprocating the sleeve as well as the spindle with relation to the sleeve to actuate the jaws, and a turningin tool arranged to be actuated by the spindle reciprocal-mg means.

8. A paper box machine having a sleeve mounted for rotation and reciprocation, a chuck body connected to said sleeve, aws

mounted in the chuck body, a spindle mounted in the sleeve and arranged to move lon gitudinally with relation thereto, actuating contra-lotions between the spnidle and the jaws, means or rotating the sleeve, means reciprocating the sleeve as well as the I v l .1. i.

more with relation LO the sleeve, a two irt lever connected to the sleeve to move e sleeve in one direction, a can for movthe lever in the last mentioned direction, gring means for returning the sleeve and e er, and adjusting means for adjusting e part of the lever with relation to the other part thereof. j y

9. paper box marhine having a sleeve inouined for rotation and reciprocation, a,

chuck body connected to said sleeve, jaws l'llOlllicoCl in the chuck body, a spindle mount.

ed in the sleeve and arranged to move longi.- tudinally with relation thereto, actuating connections between the spindle and the jaws, means for rotating the sleeve, means for reciprocating the sleeve as wellas the spindle with relation to the sleeve to actuate the aws, and adjusting devices in the reciprocating means between the spindle and sleeve.

10. A paper box machine having a chuck and a spring mounted on a sleeve, jaws in said chuck, a spindle in the sleeve connected to the jaws, means for rotating the sleeve, an adjustable stop for the sleeve, reciprocating devices connected to the, spindle, and spring interposed between the sleeve and spindle arranged to move the sleeve and chuck against the stop and then move the spindle with re-- lation to the sleeve to actuate the aws.

11. A paper box machine having a chuck mounted on a sleeve, jaws in said chuck, a spindle in the sleeve connected to the jaws, means for rotating the sleeve, an adjustable stop for the sleeve, reciprocating devices connected to the spindle, adjusting means between the spindle and the reciprocating devices, and spring interposed between the sleeve and spindle arranged to move the sleeve and chuck against the stop and to permit the spindle to move with relation to the sleeve to actuate the jaws.

12. A paper box machine having a chuck mounted on a sleeve, jaws pivot-ally mount ed in said chuck, a spindle in the sleeve connected to the jaws, means for rotating the sleeve, an adjustable stop for the sleeve, reciprocating devices connected to the spindle, interposed between the sleeve and spindle arranged to move the sleeve and chuck against the stop and to permit th spindle to move with relation to the sleeve to actuate the jaws.

13. A device of the character described comprising a bearing, a sleeve slidably and rotatably mounted t ierein, spindle slidably mounted in the sleeve, gearing for rotating the sleeve and spindle in unison, a chuck body connected to the sleeve, movable levers mounted in the chuck body, actuating connections between the jaws and the spindle, a spindle reciprocating member, and a spring interposed between the spindle and sleeve.

14. A device of the character described comprising a bearing, a. sleeve slidably and rotatably mounted therein, a spindle slidably mounted in the sleeve, gearing for rotating the sleeve and spindle in unison,

a chuck body connected to the sleeve, jaw

levers pivoted to the chuck body, actuating connections between the jaws and the Spindle, a spindle reciprocating member, and. a spring interposed between the spindle and sleeve. V

15. A device of the character described, comprising a bearing, a sleeve slidably and rotatably mounted in the bearing, a chuck body connected to the spindle, movable jaw levers in the body, a spindle slidably mounted in the sleeve and arranged to rotate therewith, actuating connections between the jaw levers and the spindle, a shell surrounding the spindle, a thrust bearing member within the shell, an adjustable connection between the'she'll and the spindle, and a spring interposed between the shell and sleeve.

16. A device of the character described comprising a bearing, a sleeve slidably and rotatably mounted in the bearing, a chuck body-connected to the spindle, movable jaw levers in the body, a spindle slidably mounted in the sleeve and arranged to rotate therewith, actuating connections between the jaw levers and the spindle, a shell surrounding the spindle, a thrust bearing member within the shell, an adjustable connection between the shell and the spindle, a spring interposed between the shell and sleeve, a slide seated in guides, a connection between the slide and the shell, and a turning-in tool yieldingly mounted on the slide.

17. A device of the character described comprising a bearing, a sleeve slidably and rotatably mounted in the bearing, a chuck body connected to the spindle, movable jaw levers in the body, a spindle slidably mounted in the sleeve and arranged to rotate therewith, actuating connections between the jaw levers and the spindle, a shell surrounding the spindle, a thrust bearing member within the shell, an adjustable connection between the shell and the spindle, a spring interposed between the shell and sleeve, a slide seated in guides in the bearing, an adjustable connection between the slide and the shell, a turning-in tool mounted to move on the slide, and a spring interposed between the slide and the turning-in tool.

18. A chuck actuating device comprising a rotating and sliding sleeve, a reciprocating spindle mounted in the sleeve for actuating chuck members, a spindle reciprocating shell mounted on the spindle, a second sleeve mounted on the spindle having thrust me1nbers for engaging the shell, a driving connection between the second sleeve and the spindle, and an adjustable connection be tween the spindle and the second sleeve for adjusting said sleeve along the spindle.

19. A chuck having a body with a central projection on one face thereof, a central bore extending into the body from the other side, a plurality of radial slots in the body on the stem side communicating with the bore, a similar number of longitudinal slots in the periphery of the. projection in line with. and communicating with the radial slots, an L-shaped jaw lever in each radial slot and the longitudinal slot in line therewith, said levers being pivoted to the body at the outer ends of one of the legs thereof, clamping devices on the ends of the other legs, a jaw lever actuating spindle in the bore, and a connection between said spindle and each jaw lever at the junctions between the legs of the levers.

In testimony of which invention, I have hereunto set my hand, at Pikesville, Md, on this 22nd day of January, 1921.

FREDERICK ELLIOTT FISHER. 

